A method of measuring the transference phenomenon of solvent in high polymers based on sodium light and Feisuo interference principle with digital image processing technology is proposed.

提出一种基于钠光和斐索干涉原理、采用数字图像处理技术测量高聚物体系中溶剂迁移现象的方法。

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This paper introduces a new method of measuring the refractive index of parallel-sided transparent material with a Michelson interferometer-the minimum visibility of sodium light fringes.

介绍一种用迈克耳逊干涉仪测量平面平行透明物体折射率的新方法。

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A sodium chloride crystal is transparent to visible light.

氯化钠晶体对可见光是透明。

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A sodium chloride crystal is transparent to visible light.

氯化钠晶体对可见光透明。

麻省理工公开课 - 固态化学导论课程节选

So, for example, here we're showing rubidium and potassium and sodium plotted where we're plotting the frequency -- that's the frequency of that light that's coming into the metal versus the kinetic energy of the electron that's ejected from the surface of the metal.

让大家看来都是可以理解的事情,就是把不同金属的观测结果,画到一张图里面来，例如这里,我们展示的是钠，钾,铷的频率-这是照射金属的光的频率,和金属表面出射电子动能的关系。

麻省理工公开课 - 化学原理课程节选

The Hicks Gate roundabout at Keynsham used to be illuminated by a dull yellow sodium light at night but, under the 71 LED lights, the area can become almost as bright as daylight.

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This slowly moving clump was composed entirely of sodium atoms, effectively turning light into matter.

BBC: NEWS | Science/Nature | Cool clouds turn light to matter

Most people who do light recreational exercise do not need to be concerned with sodium, potassium or carbohydrates (30 minutes of light exercise).

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